This calculator is designed to help you estimate your savings and return on investment when deciding to purchase solar. The main varying factor is how much of the solar energy you will use during the day and how much will go back into the grid. With a premium product at the right price even if your daytime usage is relatively low, your savings can still be very attractive and offer a great return. Most of our residential clients that aren’t home much during the day find they can adapt their energy consumption to achieve 50% usage and upwards, if you choose to install batteries then you can achieve 80 – 100% usage of solar energy as this will be offsetting night time usage also. With commercial clients even without batteries the solar consumption is typically between 80 & 100%.
Details
Enter your system details, price of power per kWh & feed in tarrif. If you don’t know the price of the system your savings will still be displayed, just not the return on investment. If you are unsure of your price of power and feed in tarrif you can use the default figures below as an estimate.
System Price after Rebate ($)
System Size (kW)
Price of power - Peak per kWh ($)
Feed In Tarrif ($)
Your Systems Daily Production
Average Daily Production of Solar System (kWh)
Your Solar usage
Enter the percentage of the solar production you think you will use during the day and from your batteries at night (if applicable). You can change this figure to see how your savings differ depending on when you use your power. The more of the solar energy you are likely to use, the greater your savings will be.
Usage percentage of solar production (%)
Workings
Used power during the day and from batteries (kWh)
Feed in Excess power Per Day (kWh)
Feed in Savings Per Day ($)
Usage Savings Per Day ($)
Total Daily Savings ($)
Total Monthly Savings ($)
Total Quarterly Savings ($)
Results
Total Annual Savings ($)
ROI In Years
ROI % per annum
This calculator assumes the price of power is going to stay the same. In reality this is unlikely with ever increasing energy prices. As the price of power increases your system is effectively saving you more and improving your return on investment.
Finance
If you choose to finance the system, quite often your savings are greater than the repayments leaving you in front from day one.
